Measuring, beveling, and mitering device for power-driven cutoff saws



2 Sheets-Sheet 1 0 w WL I rm W a a. R m i=3 ,TTTLW 6 m M m U H n W m B.

K. H. BEVELI June 8, 1954 MEASURING, Filed May 10, 1950 Q Q Q i.

022500 00000000600 00 00000 00600000 couoeooooo 00 00000000 ago QN ooouo.00 0000000000000 0000 0033 00 8000008000000 RN June 8, 1954 K. H.GRAMMER 2,680,458

MEASURING, BEVELING, AND MITERING DEVICE FOR POWER-DRIVEN CUTOFF SAWSFiled May 10, 1950 2 Sheets-Sheet 2 KARL H. GRAMMER JNVENTOR.

Patented June 8, 1954 I I 2 45 UNITED STATES PATENT OFFICE MEASURING,BEVELING, AND MITERING DEVICE FOR POWER-DRIVEN CUTOFF SAWS Karl H.Grammer, Portland, 0reg., assignor of twenty-four and one-half per centto George E. Whitmoi'e and twenty-four and one-half per cent to Roy D.Smith, both of Portland, Oreg.

Application May 10, 1950, Serial No. 161,162

1 Claim. (Cl. 143 168) 1 2 r This invention relates to improvements inand made up of two sections 5 and 6 which may w d w i t s and mor partiularly t a be made separately and joined together by means measuring,beveling and mitering device for use of a spacer strip, or as shown inFigure 2 made with power-driven cut ofi saws. of a single sheet of metalhaving vertical front, It is One Of the p pa objects of the inve 5 rearand end walls 1, 8 and 9 respectivelyand tion to provide a tool of thischaracter which is wherein the top wall or working surface of t e ofsimple, efiicient, durable construction readily work plate is divided bya slot or channel 0 o adaptable to W be c s f sew Operations allow freepassage of the saw entirely across the d Which is p t in ts Operationthrough work plate. As both sections are identical with a W d r n of aiu ment for cutting work 10 each other, a description of one will sumcefor Th e and oth r objects will appear as my ments l2 and is arepivotally mounted at their invention is more fully hereinafter describedin inner ends as at M and I5 respectively to their the followingspecification, illustrated in the acrespective sections 5 and 6 of thework plate. companying drawings and finally pointed out in Each guideelement is adapted to swing about its the appended claim. pivot pointthroughout the entire range of de- In the drawings: grees of thesemicircle as shown and may be Figure 1 is a top plan view of ameasuring, locked in any selected position by means of a beveling andmitei'ing device for power-driven locking screw 16 extending through theguide 12 cut off saws made in accordance with my invenand the slot I! insection 5 and also a locking tion and shown applied to work bench ofwhich I screw ll extending through said slot in the sechave shown afragment. tion 6. By this arrangement the guiding edge I8 Figure 2 is anenlarged fragmentary side eleof the guide elements may be locked in anyanvation of Figure 1. gular relation to the channel or slot I0 throughFigure 3 is an enlarged end elevation of Figure which the swinging orhorizontal saw passes in 1 looking in the direction of the arrow appliedits cutting operation. Both guide elements I2 to Figure 1. and I 3 whenlocked in alignment in the full line Figure 4 is an enlarged bottom planview of one side of Figure 1 in which both sides are parallel to therear edge ofthe workplate to guide identical. a workpiece therealon-g atright angles to the Figure 5 is a fragmentary plan view of measchannelHi to receive the saw cut. uring elements shown in Figure 1 for present-Removably secured to the sections 5 and 6 in ing the material to the sawto be cut into desired a fixed angular relation of degrees to thechanlengths. nel H3 and 90 degrees with respect to each other Figure 6is an enlarged obverse plan view of are two guiding elements I 9 and 2Bwhich are the means shown in Figure 5. removably secured to said sectionby means of Figure 7 is an edgewise view of Figure 6. pins 2| and 22carried by the guiding elements Figure 8 is a side elevation of a limitstop in O and adapted for insertion into apertures 23 the form of ablock adapted for engagement with 1 formed in the top wall or workingsurface of the th m asu m nts sections 5 and 6 (see Fig. 3).

Figure 9 is a fragmentary plan View of one The guiding element I2 isformed with an end of a measuring element showing dimensions elongatedslot 24 through which the locking bolt pp ed to the p u es ther 45 itextends and by means of which the guiding Referring w m p cu y to thedraW- element !2 may be moved to the dotted line polngsi sition shownwhere it is held by the pin 14 en- With particular reference 0 gu es 1and 2, tering an aperture 25 formed in the working surreference numeral1 indicates a work table or face of the section 5 and whereby a gapbetween work bench provided with a vertical back wall the inner ends ofthe guides I2 and I3 is promeasuring sections of channel elementsgenerally indicated at 21, apertured as at 28 and graduated in inchesfor co-operation with a limit stop in the form of a block 29 having pinsextending upwardly and downwardly therefrom for engagement with saidapertures in the channel elements to serve as an abutment for lumber tobe cut by the saw as it passes through the gap between the innermostends of said channel elements where said gap aligns with the gap 10which separates the sections 5 and 6 of the work plate.

The block 29 is provided with pins 39, 3|, 32 and 33 spaced inwardlyfrom the ends of the block in accordance with the dimensions appliedthereto in Figure 8. Both upper and lower pairs of pins are spaced apartan equal distance of four and one-half inches from center to center.Each pin is spaced inwardly a different distance from the adjacent endof the block and the spacement of each pin from the adjacent end of' theblock is iractionally correlated with the fractional spacement of theapertures 28' to enable any fractional setting, along with any inchsetting, of the block on the measuring side portion, definedby the uppersurfaces of the channel elements, to be achieved;

With particular reference to Figure 9' it will be noted that theapertures 28 in each channel member are arranged in parallellongitudinal rows spaced one-half inch apart and in diagonal rows acrossthe channel section also'spa'ced onehalf inch apart. The fragmentary endsection of the channel element shown in Figure 9 corresponds with theright hand end of the channel element shown in Figure 1 andwherein itsend is cut at right angles to the side walls of the channel element.This also applies to the channelelement on the left hand side of Figure1 and a gap is providedfor the passage of the saw between the ends ofsaid channel elements. In order to provide proper clearance for thepassage of the saw blade and at the" same time measure accuratelybetween the side of the saw blade and said apertures inthe channelelements, I center the first aperture 28A one-sixteenth of aninch inwardfrom the end of the channel element and the remaining apertures in thediagonal row are each-offset one-eighth of an inch. Thus the one-h lf:inch space between the apertures in each longitudinal parallel row maybe divided into" adjustments of oneeighth inch each for the block 29;Each aperture is one-fourth inch in diameter as are the pins 39;

31, 32 and 33 intheblock 29'shown in Figure 8.

Assuming that it is desired tocut ofi a portion of a workpiece twoinches in length, the block 29 would be placed with the'pin3 1 extendinginto the aperture 283 and with: the pin' 30 into an aperture spaced fourandone-half inches from the center of the aperture 283. Thus the forwardend of the block 29 would form an abut ment precisely at one edge of theaperture directly below the two inchgraduation mark as shown. If alength of material is to'be cut ed at two and one-eighth inches, the pin31 in the block 29 would be inserted in the aperture 286 in the next rowand so on across the channel member where application of the block tothe last longitudinal row will" locate the abutment at two andthree-eighths inches. Then if the distance between the end of the blockand the cutofi mark is to be further reduced in fractions of inches, theother pins 30, 32 and 33 may be inserted in the apertures in likemanner.

As best illustrated in Figure 5 the channel sections may be of anydesired length and joined together in end-to-end relationship by meansbest illustrated in Figures 6 and 7 and including an underlying channelsection 3 5 permanently secured by rivets 35 to one end of one channelsection 21 and extending forwardly therefrom for engagement by means ofpins 36 adapted to be frictionally engaged within slots 31 formed in theadjacent end of the next section.

While I have shown a particular form of embodiment of my invention, I amaware that many minor changes therein will readily suggest themselves toothers skilled in the art without departing from the spirit and scope ofthe invention. Having thus described my invention, what I claim as newand desire to protect by Letters Patent is:

A measuring work supporting device for use with a saw comprising a sawtable having a flat longitudinal work supporting surface provided with atransverse slot to receive a saw edge for passage thereof through a workpiece resting longitudinally on the supporting surface, measuring meanspositioned longitudinally of one side of the supporting surface andincluding a side portion of the table having its upper surface formedwith vertical apertures, said apertures being spaced apartlongitudinally and transversely in inches and fractions thereof, and anabutment block, having squared ends, adjustably mounted on the sideportion with the ends paralleling the slot, said block having surfacesprovided with projecting pins of a diameter substantially equal to thediameter of the apertures within which the pins seat, said pinsprojecting laterally from such surfaces of the block adjacent the endsthereof and being spaced different distances from the adjacent ends ofthe block, such spacing of the pins from the ends of the block beingcorrelated with the spacernent of the apertures so that the block may beplaced at desired fractional settings on the side portion whereby theblock can be secured on the side portion at a point spaced inches andfractions of inches from the slot dependent upon the length of the cutto be made in a work piece which has one of its ends abutting the end ofthe block facing the slot.

References Cited in the file of this patent UNITED STATES PATENTS

